Updating a node's position while adding new ones? - ios

Question

I have a enemy node that moves by updating its position in the update method, I add new nodes in a set interval, when two of the same nodes appear, the most recent one updates its position and the last node doesn't update its position, how do I write my code accordingly to update all the positioning of my enemy nodes when I add more?
The Enemy Method
-(void)Enemies {
SKTexture *pM1 = [SKTexture textureWithImageNamed:#"enemy-1"];
enemy = [SKSpriteNode spriteNodeWithTexture:pM1];
enemy.zPosition = 8;
enemy.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:enemy.size];
enemy.physicsBody.categoryBitMask = fEnemyCategory;
enemy.physicsBody.contactTestBitMask = fPlatformCategory | fMainPlatformCategory | fPlayerCategory | fPitOfCertainDoomCategory;
enemy.physicsBody.collisionBitMask = fPlatformCategory | fPlayerCategory | fEnemyCategory;
enemy.physicsBody.allowsRotation = NO;
enemy.physicsBody.friction = 0.3;
enemy.physicsBody.linearDamping = 0.7;
enemy.physicsBody.dynamic = YES;
enemy.physicsBody.affectedByGravity = YES;
enemy.physicsBody.usesPreciseCollisionDetection = YES;
enemy.position = CGPointMake(CGRectGetMidX(self.frame) + 30, CGRectGetMidY(self.frame));
enemy.position = CGPointMake(730, enemy.position.y - 129);
NSLog(#"Spawned");
[self addChild:enemy];
[enemy runAction:runAnimation];
}
Update Method
-(void)update:(CFTimeInterval)currentTime {
if (gameStart == YES & gameOver == NO) {
if (enemyExists == YES) {
if (switchMovement == NO) {
enemy.position = CGPointMake(enemy.position.x - 3.66, enemy.position.y);
}
else if (switchMovement == YES) {
enemy.position = CGPointMake(enemy.position.x + 2.83, enemy.position.y);
}
}

Answer 1

This is how you would implement what #LearnCocos2D has mentioned. I make no promises on casting the object as a spritenode properly ;)
Define Array:
NSMutableArray *array = [NSMutableArray alloc] init];
Add Enemy to Array:
[array addObject:myObject]; //Directly after [self addChild:enemy];
New Update:
-(void)update:(CFTimeInterval)currentTime {
if (gameStart == YES & gameOver == NO)
{
for (NSObject* o in array1)
{
SKSpriteNode enemyTemp = (SKSpriteNode*)o;
if (switchMovement == NO)
{
enemyTemp.position = CGPointMake(enemyTemp.position.x - 3.66, enemy.position.y);
}
else if (switchMovement == YES)
{
enemyTemp.position = CGPointMake(enemyTemp.position.x + 2.83, enemy.position.y);
}
}
}